Knight of the Villainess

Caleb, a young boy of 6, regained memories of his previous life. Despite being reborn in a strange new fantasy world vastly different from his previous one, he strived to do his best nonetheless. However, one day, he was tasked with becoming the personal knight of a certain duke's daughter who seemed eerily familiar to him. It turned out she was a character from a game he had played in his previous life, known as a villainess!

"She is Valencia Asterlight, the eldest daughter of Duke Asterlight. From now on, you shall be assigned as her personal knight."

Although taken aback by this sudden revelation, he felt no sense of urgency. In the main story of the game he had played, he was merely a nameless knight who aided the main characters by betraying the villainess. Yes, he felt no sympathy towards this girl before him, as she literally possessed no redeeming qualities and deserved everything she got.

Feeling no need for interference, Caleb continued to live his life peacefully, doing what he wanted and only putting in the minimum effort required, eventually leading the story in the direction it should go. Unless...?